Machine for taper-forming.



R. F. DOW. WIACHlNE FOR TAPER FORMING. APPLlcATloN FILED mm2?. |916.

R. F. BOW. MACHINE ma TAPER FoRMlNG. APPLlCATlON FILEDy MAK. 2?. ISIS. Nn

Patented July 11., 1914.

2 SHEETS-SHEET 2 A Jmwwmwm lill m RICHARD F. DOW, OF HARTFORD,ONNIECIICTJ'T,` ASSllG-NOR TO FRATT & WHITNEY COMPANY, F HARTFORD,CONNECTICUT, A CORPORATION 0F NEW JERSEY.

MACHINE FOR TAPER-FORMING'.

t manana.

Specification of Letters Patent.

Patented July llt', 191'?.

Applicaticn led March 27, 1916. Serial No. 86,843.

To all whom z't may concern:

Be it known that I, RICHARD F. Dow, a citizen of the United States,residing at Hartford, in the county of Hartford and vState of-Connecticut, have invented certain new and useful Improvements inMachines g for Taper-Forming, of which the following is a specification.

rllhis invention relates vto machines for taper-forming. A machineinvolving the invention can be used with advantage in various arts; forexample it can be employed to'act either on metal or on wood. Amongwhich a taper can be rapidly and the principal objects of the inventionare the provision of an apparatus of the kind set forth which iseffective in action and by accurately formed on a blank or anything elsefor that matter. There are other features of novelty and advantage whichwith the foregoing will be stated at length in the following descriptionof that form of embodiment which I have selected for illustration in thedrawings accompanying and forming part of the present specification.myself to this disclosure; ll may depart therefrom in several respectswithin the scope of the invention defined by the claims following saiddescription.

Referring to said drawings:

Figure l is an elevation from the front side of the principal parts of amachine em- 'bodying the invention. v

Fig. 2 is a 'longitudinal central section of the spindle, bearing meanstherefor, and certain of its adjuncts, the intermediate portion of thespindle being removed.

Fig. 3 is a transverse-section on the line 3 3 of Fig. 2, looking inthedirection of the arrow.

Fig. 4 is a transverse sectional view on the line 4-4 of Fig. 1, lookingin the direction of the arrow applied to said line.

Fig. 5 is an elevation as seen from the right'in Fig. 1. ofthe spindle,a swiveled yoke supporting the spindle and certain cooperating deviceshereinafter described.

Fig. 6 is a side elevationfof a portion of the taper barand certaincooperating elements hereinafter more particularly described.

Like characters refer to like parts throughout the several views, whichit will be noticed are on dierent scales.

, The different parts of the machine may be shown the crank 8 beingshown to -ticular function.

ll 4do not limitl tudinally of the carriage supported by ,any suitableframework; that shown includes in its organization the base or bed 2having on its upper side suitable Ways for supporting the carriage orslide 3 for reciprocation in a horizontal direction. In the present casethe blank or article to be'tapered and the taper bar are both carried bythis carriage orslide, although this may not be so in all instances. Thecarriage may While the action may, be automatic `it is as being manual.carriage has on its under side the rack t suitably rigidly attachedthereto (Figs' l and 5) with which the pinion 6 meshes. This pinion maybe rigid with the shaft 7 i supported by the base or bed 2 and providedfor turning it,

with some suitable'means obtain this par- On the turning of the crank4in one direction the carriage 3 is advanced toward the on oppositemovement of the crank the carriage is retracted through the agency ofthe intervening described parts. I might state at this time that on theadvance movement of the carriage the cutter hereinafter described actson the blank or work.

0n the upper side of the carriage 3 and extending longitudinally thereofare the companion flanges 9 and 10 adapted to receive between them thepillow member 11, the.

blank 12 being adapted to lie in the pillow member 11. This pillowmember snugly fits between the flanges 9 and 10, and one of its sides iscut away to provide for the inner ends of one or more screws as 13tapped through the flange 10 to engage against the work or blank 12 toforce the same solidly against the inner wall of the pillow or blanksupporting member 11. The flanges 9 and 10 with the coperating devicesJust described constitute a suitable vise for holding the work or blankl2 in a solid and substantial manner, the work and the workingholdingmeans, as shown, extending long1- 4 3 and necessarily in the line ofmovement of the latter. For additional security the work may be overhungby clamping plates 14.- fastened suitably as by screws 15 to theupperflat edges of said flanges 9 and 10. convenient way of holding Asalready cut and to secure this particular result a the work.

be operated in any desirable mannen As illustrated the observed, thework is a taper right in Fig. l, whereas his 1s merely one end mayreceive suitable templet or taper bar as 16 may be provided, this taperbar being inclined upwardly toward the tail end of the machine. It isstationary on the carriage or slide 3. As shown itis fastened to thelaterally extending base portion 9. of the vise member 9. This taper baris merely one of several types of templets or patterns which answers thenecessary purpose.l ofv a radically'diiferent character could beutilized. There may be in fact instances where the work'at zones wouldrequire reliefs and the active surface of the templet or taper bar 16can be shaped to secure this particular condition. The taper bar and thework are therefore, in the organization illustrated both rigid with thecarriage 3, but as will be obvious, this may not be necessary in allcases,l although it is of advantage.

To cut the work, a cutter or blade as 17 may be provided. This cutter orblade 17 as shown is sustained byV a spindle as 18. The body of thespindle'is hollow and its inner the plug 19 suitably rigidly connectedwith the hollow body as by the pin 20. This plug 19 is shown supportedfor rotation in an opening in the pendent bearing 21 of the arm 22constituting a suitable carrier for the spindle. The spindle between itsends is sustained by a Asecond bearing 23 also depending from thecarrier 1 is rotative.

, crumed tothe bracket 32 or arm 22.v Said carrler 22 isfurther providedwith a fork 24, the branches of which have bearings 25 and 26 to receivethe spindle 18. In the present instance the spindle As shown theelongated bearing 26 is pivotally supported as by the pivot 27 betweenthe upstanding branches of the yoke 28 swiveled as by the pivot 29 tothe upper side of the base or bed 2. view of this condition the spindlecarrier 22 is susceptible of universal movement turning about ahorizontal axis (the pivot 27) and a vertical axis presented by thepivot 29. For rotating the spindle 18' any suitable means may beprovided, said spindle having fastened to it in some suitable way thepulley or band wheel 30 (Fig. 1) shown for this urpose. As representedthe pulley is located between the branches of the fork 24. Its operatingbelt is not, however, shown.

During work the carrier 2 2 or a suitable member associated therewith isin contact with the taper bar or templet 16, and this contact vcan besecured in any desirable -manner as by means of the hand lever 31 ful-(Fig. 1) rising from 'and rigid with the bed 2, said hand lever 31between its fulcrum and' handle 33 being pivotally connected as at 34 tothe spindle carrier 22 near the free end thereof. By pressing therefore,downwardly on the handle 33 a pin or equivalent member connected withthe spindle carrier can be held in engagement with said taper bar. To

As will be clear others.

l' lever 33 downv maintaining present case is n channnel or to nish apreviously formed advancing and retractlng (Fie .n`

elevate the carrier 22 and therefore to move said pin (hereinafterdescribed) away from the taper bar any suitable means may be provided.For this purpose-I have shown the spring 35 connected as by one or morescrews or bolts 36 to the head end of the base 2 and also connected to aband or collar las 37 fastened to the carrier 22 adjacent the free endthereof. The constant tendency of this spring is to swing the arm or carrier 22 upwardly,the operator by holding the the said carrier inoperative relation. When the attendant frees the lever, the spring 35will at V once lift, the carrier 22 so as to carry the same out of`lengagement with the taper bar as will hereinafter more particularlyappear.

The cutter or knife 17 in the present'case revolves b and on therotation of the spindle 18 which carries it. In addition to thisrevoluble movement of the cutter or knife, it has a progressive advancewhich in the outward in order to form a channel to the requisitecontour, which in the present case is tapered. Said knife or cutter maybe advanced in any desirable manner, although the means shown for thisurpose is satisfactory. I should also state that the hollow body of thespindle 18 at or near the inner -end thereof and adjacent the plug 19 isfurnished withdiametrically opposite slots 38 which receive the shank ofthe cutter or knife 17 for sliding movement radially of the spindle 18.Extending longitudinally of said spindle is the rod 39 movablelongitudinally of the spindle for the cutter or knife 17. This rod 39 isprovided at its inner end with a tubular head as 40 constituting a partthereof and connected thereto in any desirable manner as by the pin 41.This head 40 .as shown is provided with the diagonal or obliqueextension 42, fitting the correspondingly formed notch or slot 43 (Fig.2) in the shank of the cutter or knife 17 From this it will be clearthat if the rod 39 be advanced relatively to the spindle 18, the knifeor cutter 17 will be correspondingly ad vanced owing to the action ofthe oblique extension-42 acting against one of the walls of the slot ornotch 43. It might be stated that in the showing the advance of the rod39 is toward the left in Fig. 2, and it will, therefore, be clear thatin this same View the cutter on its advance moves downward. Onretraction of the rod 39 thelmife or cutter 17 is correspondinglyretracted.

As may be clear the' advance of the cutter or knife 17 is securedprimarily through the templet ortaper bar 16. It willbe clear that inthe construction shown the cutter or knife 17 on its advance movestoward the work. Connected with the free end of the spindle carrier 22is a bracket 44 to slidingly receive rasante the pin 45 a membersuitable for coperation with the taper bar 16. As .illustrated the pin45 moves in a direction at right angles or approximately so to the axisof rotation of thespindle 18.

in any desirable manner. The means shown for this purpose andy now to bedescribed are satisfactory. The upper end of the pin 45 is adapted toengage the rock arm 46 connected to and extending inwardly e from therock shaft 47, the crank 48 dependinner end in the bore 58 in the outerend of the body of the spindle 18. The tube 56 in the present case isslidable said bore. The

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l to straddle the 4reduced the branchesof the .to iongitudinally 56 andtherefore the rod 39 yieldingly in their retracted posi- Fig. 2.a Theceived in the reduced part of the sleeve 55, said bushing being rigid inthe bearing 26.

he extreme forward end of the tube 56 is threaded to receive the nut 61through a perforation in the outer closed head of which the rod 39extends, stop collars as 62 being fastened as by pinning to saidrods atopposite sides of and engaging the head of said nut 61. From this itwill be clear that not only the rod39 and tube 56 are connected togetherfor movement as one, but. that the rod 39 may be adjusted longitudinallyofthe spindle 18 by the'turning of the nut 61. rlllie bushing 60 isnon-rotative in the bearing 26 and the tube 56 as shown is spindle 18,so that when the nut 61 is turned adjust the rod 39 in the manneraforesaid, the tube 56 will not be rotated.l The shifting element 53 isforked part of the sleeve 55,. ork abutting against the head orenlargedportion of saidsleeve, the consequence being that as the pin 45 iselevated as will hereinafter appear, the fork 53` keyed in the isadvanced or moved toward the left in Fig. 2 so as to effect the movementthrough the intermediate parts of the rod 39 toward the thrust to thecutter or knife 17.

The action of the machine is as follows: It will be supposed that'theslide 3 is in its retracted position, that the knife or cutter 7 is inits retracted position and that the arm ,or carrier 22 ,has been swungdown through the manipulation of the lever 31 to carry the pin 45against the forward end of the taper bar 16 andto position the knife Itwill also be supposed that the spindle 18 is being rotated so as tocause a revolution of the cutter 17. In Fig. 1 the slide 3 has justcommenced its advancing movement in e carriage advances and as thespindle 18 rotates, the cutter will be caused to revolve and its cuttingend will follow the transverse radius of the channel or groove in theWork 12. As the slide 3 and work 12 advance, the taper bar 16 movingwith them, the rise ofthe taper bar or the active surface thereof willelevate the pin 45 and therefore through the intermediate describedparts advance the cutter 17 so that the grooveor channel in the work 12will be tapered longitudinally, the groove being gradually deepened asthe work and taper bar advance with the slide. At the conclusion. of thecutting operation the attendant will release the lever 33, so that thespring 35 can automatically lift the carrier 22 to thereby move thecutter 17 away from the work 12 and the pin or finger 45 away from thetaper bar at which point the carriage or slide 3 can be retractedthrough the agency of the crank 8, and slide is in its backwardposition, the work can be taken olf and a new piece put in its stead atwhich time theoperation described will be repeated. v

As the rod 39 is advanced throughV the the forked vshifting element 53and `sleeve 55, the spring 59 is compressed so `that when the advancingmovement is concluded the spring as soon as from the taper bar 16 Aswill be obvious ll do not lfmit myself to any specic constructionforfcig'lrying the invention into effect. I might note for examplel asone ofV man obvious departures that while the taper ofythe bar 16 isupward and outward, this is an inconsequential matter, for the taper miht be oppositely reversed. 1 have alrea 17 and pinV 45 to the initialpositions thereof.y l

y mentioned the fact 13o 65 AAcombination that the taper bar may be ofsuch nature as to secure at one or more intervals in the work a reliefor reliefs. In like manner While the taper bar 16 has its inclinestraight, this may not in all instances be required. I also Wish toallude to the fact that the channel in the stock 'is not only taperedlongitudinally but laterally. v

What I claim is:

1. In a machine of the class described, the combination of a revolublecutter, Work supporting means, the cutter being adapted to operate uponthe work, means for eecting the relative movement of the cutter and thework in the direction of the axisof Vrevolution of the cutter, atemplet, and a member supported independently of the cutter and adaptedto traverse the active face of the templet, and means for transferringthe effect of said member to the cutter to move the cutter toward thework on the relative movement of the cutter and the work. A v

2. In a machine of the class described, the combination of a revolublecutter, work supporting means the cutter being adapted to operate uponthe work, means for effecting the relative movement of the cutter and,the work in the direction of the axis of revolution of the cutter, andmeans involving a taper bar stationary with respect to the work, formoving the cutter towardthe work during the relative movement of thevwork and the cutter. 35 3. In a machine of the class described, the

combination of a rotary spindle, a cutter supported by said s indle formovement transversely thereof, earings sustaining the spindle, thecutterbeing situated between 4g the bearings, means for supportin work to beacted on by the cutter, means or effecting the relative movement of thework and the spindle in the direction of the axis of rotation of thespindle, and means for eifecting the 'movement of the cutter during theentir'e relative movement of the spindle and the work to thus taper thework throughout its length. I

4. in a' machine of the dass escribi-nahe combination' of a rotaryspindle, acutter supported by said spindle for movement transverselythereof, bearings sustaining the spindle, the cutter bein situatedbetween the bearings, means or supporting work to be'acted on 'by thecutter, means for effecting the relative movement of the work and thespindle in the direction of the axis of rotation o the spindle, andmeans involving a templet for -effecting the movement of so the cuttertoward the work during said entire relativemovement of the vwork and thespindle to thus taper the work throughout its ""entire length.

' 5. Ina machine of the class described, the of a rotary spindle,acutter .able transversely thereof,

.cutter movable relatively thereto,

closed. by thespindle and provi supported by said spindle for turningmovement therewith, work supporting means, the cutter being adapted tooperate upon the work, means for effecting the relative movement of thespindle and the work in the direction of the axisof rotation of thespindle, and means involving a templet stationary with respect to thework for movingthe cutter toward the work during the relative movementof the work and the spindle.

6. In a machine of the class described, a rotary spindle provided with acutter movably supported spindle mounted for reciprocation, and meansfor moving said cutter transversely of the spindle during its rotationand during the complete advancing movement of the carrier.

7 In a machine of the class described, a rotary spindle provided with acutter movmeans for moving the cutter with respect to the spindle amovably mounted carrier for the spindle, spring means acting against thecarrier to move the s indle to inoperative positron, and manual yoperable means for operating the carrier in oppos tion to said springcombination of a reciproeatory slide prol vided with work holdin meansand with a taper bar, a rotary spin e provided with a the cutter beingadapted to act on the work during the reciprocation of the slide, a pinto be engaged and operated by the taper. bar on the advance movement ofthe slide, and means actuated by said pin for effecting the movement ofsaid cutter toward the work on the advance of said slide.

10. In a machine of the class described,

the combination of a 'reciprocatory slide provided with woork holdingmeans and with a taper bar, a rotary spindle provided with a cuttermovable relatively thereto, the c utter being adapted to act on the workduring the reciprocation of the slide, a pin to be engaged and operatedby the taper bar on the advance movement of the slide, a rod in- 'dedwith means for operating the cutter with respect to the spindle, andmeans actuated by said pin for advancing said rod to eifect thecorresponding movement of the cutter toward the work.

11. In a machine of the class described, the combination of areciprocatory slide provided with work holding means and with :nassen ataper bar, a rotary spindle furnished with versely movable cutter a rodinclosed by a cutter movable relatively thereto, the cutthe spindle andprovided with an oblique ter being adapted to act on the Workdurextension, the shank of the cutter having a ing the reciprocation ofthe slide, a pin to correspondingly shaped slot to receive `said beengaged and operated b the taper bar extension, spring means forretracting the 20" on the advance movement o the slide, a rod rod andthereby the cutter, and independent inclosed by the spindle and providedwith means for advancing the rod and thereby means for advancing andretracting the cut- 'the cutter with respect to the spindle.' ter,spring means acting against the rod to In testimony whereof I affix mysignature retract the same, and means actuated by said in presence oftwo witnesses. pin for eecting the advance of lsaid rod RICRD 1F. DUW.

and therefore the movement of the cutter toward the Work on the advanceof the slide. Witnesses:

12. In a machine of the class described, L. L. m.,

1 a rotary spindle provided with a trans- AHearn SHEimAnD..

